Fluke 8846A - Page 61

Performance Test and Calibration
Performance Tests 3
3-21
Table 3-14. 8846A DC Current Verification Steps
90-day Test Limits 1-year Test Limits
Nominal
Input
Range
High Low High Low
0 A
[1]
100.0 μA 25.0 ηA -25.0 ηA 25.0 ηA -25.0 ηA
100.0 μA
[1]
100.0 μA 100.065 μA 99.935 μA 100.075 μA 99.935 μA
-100.0 μA
[1]
100.0 μA -99.935 μA -100.065 μA -99.925 μA -100.065 μA
0 A
[1]
1.0 mA 50.0 ηA -50.0 ηA 50.0 ηA -50.0 ηA
1.0 mA 1.0 mA 1.00035 mA 999.65 μA 1.00055 mA 999.45 μA
-1.0 mA 1.0 mA -999.65 μA -1.00035 mA -999.45 μA -1.00055 mA
0 A 10.0 mA 2.0 μA -2.0 μA 2.0 μA -2.0 μA
10.0 mA 10.0 mA 10.005 mA 9.995 mA 10.007 mA 9.993 mA
-10.0 mA 10.0 mA -9.995 mA -10.005 mA -9.993 mA -10.007 mA
0 A 100.0 mA 5.0 μA -5.0 μA 5.0 μA -5.0 μA
100.0 mA 100.0 mA 100.035 mA 99.965 mA 100.055 mA 99.945 mA
-100.0 mA 100.0 mA -99.965 mA -100.035 mA -99.945 mA -100.055 mA
Move the connector from the 100 mA jack to the 10 A jack on the UUT for the following steps.
0 A 1 A 200.0 μA -200.0 μA 200.0 μA -200.0 μA
1 A
[1]
1 A 1.0006 A 999.4 mA 1.0007 A 999.3 mA
-1 A
[1]
1 A -999.4 mA -1.0006 A -999.3 mA -1.0007 A
0 A 3 A 600.0 μA -600.0 μA 600.0 μA -600.0 μA
1.9 A 3 A 1.90212 A 1.89788 A 1.9025 A 1.8975 A
-1.9 A 3 A -1.9978 A -2.0022 A -1.9974 A -2.0026 A
0 A 10 A 800.0 μA -800.0 μA 800.0 μA -800.0 μA
10 A
[1]
10 A 10.0128 A 9.9872 A 10.0158 A 9.9842 A
-10 A
[1]
10 A -9.9872 A -10.0128 A -9.9842 A -10.0158 A
[1] 5520A must be used with 8508A to obtain suitable test uncertainty ratio.